Tender For equipment items - vernier caliper : range:0-150mm, lc=0.02 mm / 0.001 inch, principle of moment apparatus: knife edge, metre scale, slotted weights (5x50g) with hanger, simple pendulum apparatus: retort stand, metal spherical ball, stop clock, youngs s modulus apparatus: two knife edges, metre scale, two sets of slotted weights (5x50g) with hangers, spring constant apparatus: helical spring attached with scale in a stand and slotted weighs (5x50g) with hangers, stop clock, boyle s law apparatus : quills tube attached with scale, stand and clamp, laws of concurrent forces apparatus: vertical drawing wooden board with two z pulleys and three sets of slotted weights (5x50g) with hangers